Q. The diagram below represents a section of undisturbed layers of sedimentary rock in New York State and shows the location of fossils of several closely related species. According to currently accepted evolutionary theory, which is the most probable assumption about species $A,B$ and $C$?

A) Species $B$ is more abundant than species $C$
B) Species $C$ existed before species $B$
C) Species $A$ and B are genetically identical
D) Species $B$ descended from species $A$
Explanation

Species A is the most recent species because it is located on the top. As time goes on, debris falls on the ground covering these organisms, turning them into fossils. Further we go down, older all the fossils

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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